Cron - G4 Cron like parser with ability to parse expressions with resolution in seconds - based on PHP Cron Expression Parser
Using Composer and Packagist
composer require g4/cron
require_once 'vendor/autoload.php';
$expression = \G4\Cron\CronExpression::factory('*/3 * * * * * *');
echo date('Y-m-d H:i:s'), ' = ', $expression->getNextRunDate()->format('Y-m-d H:i:s'), PHP_EOL;
echo date('Y-m-d H:i:s'), ' = ', $expression->getPreviousRunDate()->format('Y-m-d H:i:s'), PHP_EOL;
$ make install
$ make test
(The MIT License) see LICENSE file for details...